For pianos 4' 8'' to 5' 7''. New mover design for acoustic and digital grand pianos. Designed with "A" shape, this eliminates issues with lyre support as the traditional spider look can have. These mobileers are easier to assemble and are lighter in weight. Includes three 24" form bars, one 27" double sleeve, one 36" double sleeve, one 16" offset extender and three cups for the legs. Locking 5" casters included. Weight: 80 lbs.